Half the crowd cheers, half winces — and both sides have a point.

Spark plugs might sound small and inconsequential, but neglecting to change them can have serious and expensive repercussions ...

Scientists are exploring a surprisingly simple way to clean up diesel engines: adding tiny droplets of water to the fuel. During combustion, the water rapidly vaporizes, triggering micro-explosions ...

Jeremy Eatmon transforms his classic Chevy Bel Airs into gassers with lots of new parts, but his goal is to save these classics.

A detailed look at California’s reintroduced Leno’s Law and how the new bill differs from the previous proposal to create a 35-year rolling smog exemption for classic cars.